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Finding the Fourth Proportional to 379,134,851.60, 531,505,428.40 and 379,134,851.60

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Solution

The fourth proportional to 379,134,851.60, 531,505,428.40 and 379,134,851.60 is: 531,505,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,134,851.60 : 531,505,428.40 = 379,134,851.60 : x
  2. Step 2: Convert to fraction form
    379,134,851.60/531,505,428.40 = 379,134,851.60/x
  3. Step 3: Cross multiply
    379,134,851.60x = 531,505,428.40 × 379,134,851.60
  4. Step 4: Simplify right side
    379,134,851.60x = 201,512,231,721,028,416
  5. Step 5: Solve for x
    x = 201,512,231,721,028,416/379,134,851.60
  6. Step 6: Final answer
    x = 531,505,428.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.